This field shows read-only mappings between the desired local path and the corresponding remote path.
PyCharm allows configuring paths by clicking next to the field.
In the dialog box that opens, click or
buttons to change the path mappings as desired.

Click this button to reveal the list of available types of interpreters:

All the packages should be already installed in the Docker image. If some packages are missing,
then you will have to create a new Docker image, as described on the page
Quickstart Guide: Compose and Django.